Mocha Spice Squares, a recipe from Mauritius on Gourmetpedia

Ingredients

• - 200 g (7 oz.) softened butter
• - 200 g (7 oz.) brown granulated sugar
• - 2 eggs (separated)
• - 125 g (4 oz.) ground hazelnuts
• - 100 g (3 1/2 oz.) dark chocolate, crushed into small pieces (or chocolate chips)
• - 250 g (9 oz.) flour
• - 1 tsp. baking powder
• - 2 tbsp. Rum
• - 3 tsp. instant Nescafé granules
• - 3 tbsp. hot water to dissolve the coffee
• - 200 g (7 oz.) icing sugar
• - 1 tsp. cinnamon
• - 1 tsp. ground cardamom
• - 1 tsp. ground cloves
• - 1 tbsp. vanilla